diff options
Diffstat (limited to 'gps/android/2.0/location_api/LocationUtil.cpp')
| -rw-r--r-- | gps/android/2.0/location_api/LocationUtil.cpp | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/gps/android/2.0/location_api/LocationUtil.cpp b/gps/android/2.0/location_api/LocationUtil.cpp new file mode 100644 index 0000000..8a30066 --- /dev/null +++ b/gps/android/2.0/location_api/LocationUtil.cpp @@ -0,0 +1,311 @@ +/* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation, nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <LocationUtil.h> +#include <log_util.h> +#include <inttypes.h> + +namespace android { +namespace hardware { +namespace gnss { +namespace V2_0 { +namespace implementation { + +using ::android::hardware::gnss::V2_0::GnssLocation; +using ::android::hardware::gnss::V2_0::GnssConstellationType; +using ::android::hardware::gnss::V1_0::GnssLocationFlags; + +void convertGnssLocation(Location& in, V1_0::GnssLocation& out) +{ + memset(&out, 0, sizeof(V1_0::GnssLocation)); + if (in.flags & LOCATION_HAS_LAT_LONG_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_LAT_LONG; + out.latitudeDegrees = in.latitude; + out.longitudeDegrees = in.longitude; + } + if (in.flags & LOCATION_HAS_ALTITUDE_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_ALTITUDE; + out.altitudeMeters = in.altitude; + } + if (in.flags & LOCATION_HAS_SPEED_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED; + out.speedMetersPerSec = in.speed; + } + if (in.flags & LOCATION_HAS_BEARING_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING; + out.bearingDegrees = in.bearing; + } + if (in.flags & LOCATION_HAS_ACCURACY_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_HORIZONTAL_ACCURACY; + out.horizontalAccuracyMeters = in.accuracy; + } + if (in.flags & LOCATION_HAS_VERTICAL_ACCURACY_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_VERTICAL_ACCURACY; + out.verticalAccuracyMeters = in.verticalAccuracy; + } + if (in.flags & LOCATION_HAS_SPEED_ACCURACY_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED_ACCURACY; + out.speedAccuracyMetersPerSecond = in.speedAccuracy; + } + if (in.flags & LOCATION_HAS_BEARING_ACCURACY_BIT) { + out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING_ACCURACY; + out.bearingAccuracyDegrees = in.bearingAccuracy; + } + + out.timestamp = static_cast<V1_0::GnssUtcTime>(in.timestamp); +} + +void convertGnssLocation(Location& in, V2_0::GnssLocation& out) +{ + memset(&out, 0, sizeof(V2_0::GnssLocation)); + convertGnssLocation(in, out.v1_0); + + struct timespec sinceBootTime; + struct timespec currentTime; + struct timespec sinceBootTimeTest; + int64_t sinceBootTimeNanos = 0; + bool clockGetTimeSuccess = false; + const uint32_t MAX_TIME_DELTA_VALUE_NANOS = 10000; + const uint32_t MAX_GET_TIME_COUNT = 20; + /* Attempt to get CLOCK_REALTIME and CLOCK_BOOTIME in succession without an interruption + or context switch (for up to MAX_GET_TIME_COUNT times) to avoid errors in the calculation */ + for (uint32_t i=0; i < MAX_GET_TIME_COUNT; i++) { + if (clock_gettime(CLOCK_BOOTTIME, &sinceBootTime) != 0) { + break; + }; + if (clock_gettime(CLOCK_REALTIME, ¤tTime) != 0) { + break; + } + if (clock_gettime(CLOCK_BOOTTIME, &sinceBootTimeTest) != 0) { + break; + }; + sinceBootTimeNanos = sinceBootTime.tv_sec*1000000000 + sinceBootTime.tv_nsec; + int64_t sinceBootTimeTestNanos = + sinceBootTimeTest.tv_sec*1000000000 + sinceBootTimeTest.tv_nsec; + int64_t sinceBootTimeDeltaNanos = sinceBootTimeTestNanos - sinceBootTimeNanos; + + /* sinceBootTime and sinceBootTimeTest should have a close value if there was no + interruption or context switch between clock_gettime for CLOCK_BOOTIME and + clock_gettime for CLOCK_REALTIME */ + if (sinceBootTimeDeltaNanos < MAX_TIME_DELTA_VALUE_NANOS) { + clockGetTimeSuccess = true; + break; + } else { + LOC_LOGD("%s]: Delta:%" PRIi64 "ns time too large, retry number #%u...", + __FUNCTION__, sinceBootTimeDeltaNanos, i+1); + } + } + + if (clockGetTimeSuccess) { + int64_t currentTimeNanos = currentTime.tv_sec*1000000000 + currentTime.tv_nsec; + int64_t locationTimeNanos = in.timestamp*1000000; + LOC_LOGD("%s]: sinceBootTimeNanos:%" PRIi64 " currentTimeNanos:%" PRIi64 "" + " locationTimeNanos:%" PRIi64 "", + __FUNCTION__, sinceBootTimeNanos, currentTimeNanos, locationTimeNanos); + if (currentTimeNanos >= locationTimeNanos) { + int64_t ageTimeNanos = currentTimeNanos - locationTimeNanos; + LOC_LOGD("%s]: ageTimeNanos:%" PRIi64 ")", __FUNCTION__, ageTimeNanos); + if (ageTimeNanos >= 0 && ageTimeNanos <= sinceBootTimeNanos) { + out.elapsedRealtime.flags |= ElapsedRealtimeFlags::HAS_TIMESTAMP_NS; + out.elapsedRealtime.timestampNs = sinceBootTimeNanos - ageTimeNanos; + out.elapsedRealtime.flags |= ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS; + // time uncertainty is 1 ms since it is calculated from utc time that is in ms + out.elapsedRealtime.timeUncertaintyNs = 1000000; + LOC_LOGD("%s]: timestampNs:%" PRIi64 ")", + __FUNCTION__, out.elapsedRealtime.timestampNs); + } + } + } else { + LOC_LOGE("%s]: Failed to calculate elapsedRealtimeNanos timestamp after %u tries", + __FUNCTION__, MAX_GET_TIME_COUNT); + } +} + +void convertGnssLocation(const V1_0::GnssLocation& in, Location& out) +{ + memset(&out, 0, sizeof(out)); + if (in.gnssLocationFlags & GnssLocationFlags::HAS_LAT_LONG) { + out.flags |= LOCATION_HAS_LAT_LONG_BIT; + out.latitude = in.latitudeDegrees; + out.longitude = in.longitudeDegrees; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_ALTITUDE) { + out.flags |= LOCATION_HAS_ALTITUDE_BIT; + out.altitude = in.altitudeMeters; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_SPEED) { + out.flags |= LOCATION_HAS_SPEED_BIT; + out.speed = in.speedMetersPerSec; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_BEARING) { + out.flags |= LOCATION_HAS_BEARING_BIT; + out.bearing = in.bearingDegrees; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_HORIZONTAL_ACCURACY) { + out.flags |= LOCATION_HAS_ACCURACY_BIT; + out.accuracy = in.horizontalAccuracyMeters; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_VERTICAL_ACCURACY) { + out.flags |= LOCATION_HAS_VERTICAL_ACCURACY_BIT; + out.verticalAccuracy = in.verticalAccuracyMeters; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_SPEED_ACCURACY) { + out.flags |= LOCATION_HAS_SPEED_ACCURACY_BIT; + out.speedAccuracy = in.speedAccuracyMetersPerSecond; + } + if (in.gnssLocationFlags & GnssLocationFlags::HAS_BEARING_ACCURACY) { + out.flags |= LOCATION_HAS_BEARING_ACCURACY_BIT; + out.bearingAccuracy = in.bearingAccuracyDegrees; + } + + out.timestamp = static_cast<uint64_t>(in.timestamp); +} + +void convertGnssLocation(const V2_0::GnssLocation& in, Location& out) +{ + memset(&out, 0, sizeof(out)); + convertGnssLocation(in.v1_0, out); +} + +void convertGnssConstellationType(GnssSvType& in, V1_0::GnssConstellationType& out) +{ + switch(in) { + case GNSS_SV_TYPE_GPS: + out = V1_0::GnssConstellationType::GPS; + break; + case GNSS_SV_TYPE_SBAS: + out = V1_0::GnssConstellationType::SBAS; + break; + case GNSS_SV_TYPE_GLONASS: + out = V1_0::GnssConstellationType::GLONASS; + break; + case GNSS_SV_TYPE_QZSS: + out = V1_0::GnssConstellationType::QZSS; + break; + case GNSS_SV_TYPE_BEIDOU: + out = V1_0::GnssConstellationType::BEIDOU; + break; + case GNSS_SV_TYPE_GALILEO: + out = V1_0::GnssConstellationType::GALILEO; + break; + case GNSS_SV_TYPE_UNKNOWN: + default: + out = V1_0::GnssConstellationType::UNKNOWN; + break; + } +} + +void convertGnssConstellationType(GnssSvType& in, V2_0::GnssConstellationType& out) +{ + switch(in) { + case GNSS_SV_TYPE_GPS: + out = V2_0::GnssConstellationType::GPS; + break; + case GNSS_SV_TYPE_SBAS: + out = V2_0::GnssConstellationType::SBAS; + break; + case GNSS_SV_TYPE_GLONASS: + out = V2_0::GnssConstellationType::GLONASS; + break; + case GNSS_SV_TYPE_QZSS: + out = V2_0::GnssConstellationType::QZSS; + break; + case GNSS_SV_TYPE_BEIDOU: + out = V2_0::GnssConstellationType::BEIDOU; + break; + case GNSS_SV_TYPE_GALILEO: + out = V2_0::GnssConstellationType::GALILEO; + break; + case GNSS_SV_TYPE_NAVIC: + out = V2_0::GnssConstellationType::IRNSS; + break; + case GNSS_SV_TYPE_UNKNOWN: + default: + out = V2_0::GnssConstellationType::UNKNOWN; + break; + } +} + +void convertGnssEphemerisType(GnssEphemerisType& in, GnssDebug::SatelliteEphemerisType& out) +{ + switch(in) { + case GNSS_EPH_TYPE_EPHEMERIS: + out = GnssDebug::SatelliteEphemerisType::EPHEMERIS; + break; + case GNSS_EPH_TYPE_ALMANAC: + out = GnssDebug::SatelliteEphemerisType::ALMANAC_ONLY; + break; + case GNSS_EPH_TYPE_UNKNOWN: + default: + out = GnssDebug::SatelliteEphemerisType::NOT_AVAILABLE; + break; + } +} + +void convertGnssEphemerisSource(GnssEphemerisSource& in, GnssDebug::SatelliteEphemerisSource& out) +{ + switch(in) { + case GNSS_EPH_SOURCE_DEMODULATED: + out = GnssDebug::SatelliteEphemerisSource::DEMODULATED; + break; + case GNSS_EPH_SOURCE_SUPL_PROVIDED: + out = GnssDebug::SatelliteEphemerisSource::SUPL_PROVIDED; + break; + case GNSS_EPH_SOURCE_OTHER_SERVER_PROVIDED: + out = GnssDebug::SatelliteEphemerisSource::OTHER_SERVER_PROVIDED; + break; + case GNSS_EPH_SOURCE_LOCAL: + case GNSS_EPH_SOURCE_UNKNOWN: + default: + out = GnssDebug::SatelliteEphemerisSource::OTHER; + break; + } +} + +void convertGnssEphemerisHealth(GnssEphemerisHealth& in, GnssDebug::SatelliteEphemerisHealth& out) +{ + switch(in) { + case GNSS_EPH_HEALTH_GOOD: + out = GnssDebug::SatelliteEphemerisHealth::GOOD; + break; + case GNSS_EPH_HEALTH_BAD: + out = GnssDebug::SatelliteEphemerisHealth::BAD; + break; + case GNSS_EPH_HEALTH_UNKNOWN: + default: + out = GnssDebug::SatelliteEphemerisHealth::UNKNOWN; + break; + } +} + +} // namespace implementation +} // namespace V2_0 +} // namespace gnss +} // namespace hardware +} // namespace android |